body{
    background: url("../img/bg.png");
}
.center{
    background: white;
    width: 50%;
    /*倒角*/
    border-radius: 15px;
    margin: auto;
    margin-top: 200px;
}
/*表格样式*/
table{
    width: 100%;
    text-align: center;
}
/*提示信息样式*/
table label{
    font-size: 20px;
}
/*输入框的样式*/
table input{
    width: 90%;
    height: 40px;
    outline: none;
    border-radius: 10px;
    border: 1px solid grey;
}
/*确定按钮样式*/
button{
    width: 80%;
    height: 40px;
    background: red;
    border-radius: 15px;
    border: 1px solid crimson;
    color: white;
    font-size: 20px;
    cursor: pointer;
}
/*表行高度*/
tr{
    line-height: 60px;
}
th{
    font-size: 30px;
    color: orangered;
}
/*底部页脚样式*/
.footer{
    width: 35%;
    margin: auto;
    font-size: 15px;
    color: grey;
}
/*超链接样式*/
a{
    text-decoration: none;
    color: blue;
}